diff --git a/examples/nfc-utils.c b/examples/nfc-utils.c
index 2626760..33063c8 100644
--- a/examples/nfc-utils.c
+++ b/examples/nfc-utils.c
@@ -21,6 +21,21 @@ static const byte_t OddParity[256] = {
   1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1
 };
 
+byte_t oddparity(const byte_t bt)
+{
+  return OddParity[bt];
+}
+
+void oddparity_bytes_ts(const byte_t* pbtData, const size_t szLen, byte_t* pbtPar)
+{
+  size_t szByteNr;
+  // Calculate the parity bits for the command
+  for (szByteNr=0; szByteNr<szLen; szByteNr++)
+  {
+    pbtPar[szByteNr] = OddParity[pbtData[szByteNr]];
+  }
+}
+
 void print_hex(const byte_t* pbtData, const size_t szBytes)
 {
   size_t szPos;
diff --git a/examples/nfc-utils.h b/examples/nfc-utils.h
index aaacf93..c0c6f68 100644
--- a/examples/nfc-utils.h
+++ b/examples/nfc-utils.h
@@ -18,7 +18,7 @@
  * 
  * 
  * @file nfc-utils.h
- * @brief
+ * @brief Provide some examples shared functions like print, parity calculation, options parsing.
  */
 
 #ifndef _EXAMPLES_NFC_UTILS_H_
@@ -27,6 +27,8 @@
 #include <stdlib.h>
 #include <string.h>
 
+byte_t oddparity(const byte_t bt);
+void oddparity_byte_ts(const byte_t* pbtData, const size_t szLen, byte_t* pbtPar);
 
 void print_hex(const byte_t* pbtData, const size_t szLen);
 void print_hex_bits(const byte_t* pbtData, const size_t szBits);